City Atlas of Philadelphia, 2nd to 20th and 29th and 31st Wards, 1875, Title Page

Chicago citation style
G.M. Hopkins, C.E. City Atlas of Philadelphia, 2nd to 20th and 29th and 31st Wards, 1875, Title Page. Retrieved from the Digital Public Library of America, http://libwww.freelibrary.org/diglib/searchItem.cfm?itemID=MGMHAE00001. (Accessed December 15, 2018.)
APA citation style
G.M. Hopkins, C.E, City Atlas of Philadelphia, 2nd to 20th and 29th and 31st Wards, 1875, Title Page. Retrieved from the Digital Public Library of America, http://libwww.freelibrary.org/diglib/searchItem.cfm?itemID=MGMHAE00001
MLA citation style
G.M. Hopkins, C.E. Retrieved from the Digital Public Library of America <http://libwww.freelibrary.org/diglib/searchItem.cfm?itemID=MGMHAE00001>.
Note: These citations are programmatically generated and may be incomplete.